Capital Ratios (Details)	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Actual capital amounts and ratios
Minimum Tier1 risk-based capital as a percent of risk-weighted assets (as a percent)	4.00%
Minimum total risk-based capital as a percent of risk-weighted assets (as a percent)	8.00%
Tier 1 risk-based capital (as a percent)	13.21%	12.73%	14.55%
Total risk-based capital (as a percent)	14.47%	13.99%	15.82%
Tier 1 leverage (as a percent)	8.88%	9.87%	9.23%
SCBT
Actual capital amounts and ratios
Tier 1 risk-based capital (as a percent)	12.92%	12.51%	14.34%
Total risk-based capital (as a percent)	14.19%	13.78%	15.62%
Tier 1 leverage (as a percent)	8.69%	9.70%	9.11%